A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5935-01-108-9525
NSN 6145-01-406-5594
NSN 6650-01-085-6088
NSN 6685-01-399-3595
NSN 5915-01-069-7162
NSN 5960-01-599-9821
NSN 5910-01-411-5366
NSN 6105-00-014-5010
NSN 5985-01-498-0503
NSN 5990-01-121-1175
NSN 6135-01-442-7275
NSN 6145-01-080-2728